Model for decelerated light, 2020, picks up on Olafur Eliasson’s long-standing interest in navigational instruments, compasses, and models of our planet and solar system, such as orreries and armillary spheres. In this work, a large glass sphere, supported by a black tripod, is encircled by a brass ring with a strip of LEDs embedded in it. A small blue glass ball, mounted on a rotatable arm, can be made to orbit the globe by hand. An LED shining through the glass ball projects blue light into the glass globe, which in turn refracts and reflects the light out onto the work’s surroundings – an especially powerful effect in low-lighting conditions.